We are using BJU's Life Science this year. It is great material but it is very heavy for jr high (IMO). I do like the activity sheets to help reinforce the chapter information. I am trying to decide if I am going to continue with BJU for 8th or use something lighter. But whatever I do, I think I will incorporate the outline or summary idea.
Sorry I can't help you on a recommendation on which would be better (textbook vs WTM suggestions). I, personally, need more of a textbook approach with something like the outlining or summary idea thrown in.
Now that I think about it, I should incorporate that for history this year as my dd is struggling to retain the information. Thanks for the inspiration. I was planning on using it next year but I don't see why I can't start now.